Diamonds may be the traditional stone of choice for engagement rings, but there's no law that says you can't add a little color. Many women prefer the rich hues of sapphires or emeralds to the clear sparkle of a diamond. A gemstone engagement ring will certainly stand out from the rest.
When choosing a gemstone, grooms need not pay so much attention to the clarity as to the color. The ideal stone will be evenly colored throughout. Note that brightly colored gems tend to be pricier than paler ones, such aquamarine. Because gems are typically less expensive than diamonds, the groom can get more bang for his buck. Grooms wary of selecting a gem for the dominant stone can always add some extra flair by using smaller jewels for side stones paired with a larger diamond.